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cje ›› 2004, Vol. ›› Issue (6): 131-137.

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Effects of long-term fertilization on soil nutrient pool

GUAN Yan1,2, YU Wantai1, LI Jiandong2   

  1. 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    2. Shenyang Agricultural University, Shenyang 110161, China
  • Received:2004-06-25 Revised:2004-09-12 Online:2004-12-10

Abstract: This paper reviewed the research on dynamic and balance of soil nutrient pool under long-term fertilization conditions,mainly about some active aspects which included dynamic variations of total nitrogen(N),available N,total phosphorus(P),available P,total potassium(K),available K,and organic carbon in soil; dynamic variations of ammonium N,amino acid N,amino sugar N,unknown N,non hydrolyzable Nand microbiomass Nin soil nutrient pool; changes of Ca2-P,Ca8-P,Al-P,Fe-P,O-P,labile organic P,moderately labile organic P,moderately stable P,highly stable Pand microbiomass Pin soil; changes of loosely,stably and tightly combined humus,humic and fulvic acids in soil carbon pool; effects of long-term fertilization on organic-mineral complex status in soil; nutrients cycling and balance of agricultural soil nutrients pool. Currently the problems were pointed out,and some key points for research in future were emphasized.

Key words: Non-photosensitivity, Extra-prematurity, Winter wheat variety Dongzao 5, Photo-thermal characteristics

CLC Number: